SOLUTION: use the following f(x)=2x^2-3, g(x)=2x-3 for the following: (f+g)(3)

Algebra ->  Equations -> SOLUTION: use the following f(x)=2x^2-3, g(x)=2x-3 for the following: (f+g)(3)      Log On


   

Question 947484: use the following f(x)=2x^2-3, g(x)=2x-3 for the following: (f+g)(3)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Add the functions

%28f%2Bg%29%28x%29=f%28x%29%2Bg%28x%29
%28f%2Bg%29%28x%29=2x%5E2-3%2B2x-3
%28f%2Bg%29%28x%29=2x%5E2%2B2x-6

Now plug in x = 3

%28f%2Bg%29%28x%29=2x%5E2%2B2x-6
%28f%2Bg%29%283%29=2%283%29%5E2%2B2%283%29-6
%28f%2Bg%29%283%29=2%289%29%2B2%283%29-6
%28f%2Bg%29%283%29=18%2B6-6
%28f%2Bg%29%283%29=18